Governor.



R. CONRADER.-

GOVERNOR.

' APPLICATION FILED MAY 29v. 191e.

1,272,384. Patented July 16,1918.

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RUDOLPH CONRADER,V ory ERIE, PENNSYLVANIA.

GOVERNOR.

Specification of Letters Patent. Patented July 1 6, 1918.

Application led May 29, 1916. Serial No. 100,550.

To all whom t may concern.'

Be it known that I, RUDoLrH CONRADNR, a'citizen of the United States, residing ai Erie, in the county 0f Erie and State of Pennsylvania, have invented new and useful Improvements in Governors, of which-the following is aspeciiication.

This invention relates to governors and consists in certain improvements in the construction thereof as will be hereinafter fully described and pointed out 'in the claims.

In its more specific phases -the invention relates to pump governors and preferably such as have their controlling means sensi'- tive to pressure. While I have referred to the pump as an air compressor, fluids other than air may bepumped. f

The invention is illustrated in the laccompanying drawings as follows Y Figure 1 shows a vertical section through the center of the governor.v

Fig. 2 shows a sideelevation, partlyin section, of the pressure element giving'axial movement'to the valve-' Fig. 3 shows'a section on the line 3--3 in Fig. 1. Fig. 4 shows a section onfthe line 4-4 in Fig. 1.

Fig. 5 shows a section on the line 5-5 in Fig. 1.

Fig. 6 shows a front elevation of the valve actuating cam.

Fig. 7 shows a modification of thiscanr Fig. 8 shows ,a section on' the line 8 8 in Fig. 1.

1 marks the valve body and 2 the valve diaphragm which as shown is double-walled with an annular steam chamber. VThis is a common construction for such valve diavso phragrns. The'valve 3 is cylindrical and is mounted in a valve casing 4. The valve casing 4 has an extension 5 extending below the diaphragm 2 and is provided withthe openings 6. These openings may be varied to suit the opening desired. The valve 3 has the cylindrical walls 7 which fit into the casing 4. The valve has the upward extension 8 and the slots 9 which are adapted to register with the slots 6. The valve also has the horizontal 'closures 10, one adapted to operate with each wall of the diaphragm. The cylindrical' casing 4 has the closures 6a for the slots 6 opposite the closures 10 so that v lwith the closures ,y 10,y in register with'the diaphragms there is a complete closure of the valve. This valve is adapted to operate both by rotative lmovement andby axial movement..- By moving the valve axially the closures'lO are moved out of register with the closures 6a vso that steam is permitted to pass through the slots. The valve, however, does not go below the extension 5, nor is the upper end of the easing exposed by reason of the downward movement becausev of the .extension 8. A rotative movement of the valve tends to close thevalve by bringing the slots 9 out of register with the slots 6 so that with either an axialmovement or a rotative movement of the valve opening may be varied. This is important in that with the `varying loads and varying speeds to which it is desired to control a motor this double adjustment of the vvalve makes possible a greater variety of control. 'A stem 11 extends upwardly from the valve through a gland 12 inthe cap 13 and the governor frame 14 is mounted on the cap 13.

f A- cylinder 15 is secured to the upper end of the `governor frame. It is provided with vthe screw-threaded end 16 which is screwed into the upper end of the frame. The cylinder is provided with an extension 17 which is screw-threaded Aand extends through the upper end of the frameV Yand a nut 18 is arranged at the lower end of the extension 17 s'o asto lock. the cylinder` 15 in place. The piston 19 is arranged in the cylinder 15. It operates against a stem 20,

the stem extending through a gland 21 in the end of the cylinder and into position to operate in conjunction with the stem 11. Air yfrom the system to which air is pumped by the Compressor controlled by the governor is admitted through the pipe 23 to the upper end of the cylinder 15.

Counterpressure vsprings 24 are secured to the cross head 25. The cross head 25 has a socket 26 and the stem 11 extends through the cross head into a socket 26. A head 27 is arranged on the upper end of the stem 11 and a plug 28 is screwed into the socket thus locking the head 27 in thev socket. It will be noted, however, that the stern 11 and its head 27 are free to rotate but are moved axially by the cross head 25. The'upper ends-of the springs24 are secured to a nut 29 which is screwed into the spring, the wires of` the springengagingthe threadson :the nut 129 anathema 29 is.. were@ .Omo anon 3.o Which extends through a projection 31 at the upper end oi' the cylinder 1 5. There are two of the springs 24, one at each side of the cross head and the adjusting mechanism, for said springs as just hereinbefore described. By varying, the,.p osi tion of the nut ZQfvi/n the spring the effective length of the spring may be varied land by. adjusting the position oi' the nut 29 on the bolt 3() the initial tension ofthe :springs may be maintained or-variedas desi-red.

.A screw. 32 extends lthrough the upper end of .the cylinder 15 into engagementvwiththe .piston 19 and by its adjustment the initial position of' the piston and with it the valve may beadjusted. lfflhepost 83. isrotatively mounted in the .cross piece34 of the frame. A cam 35 adj ustably mounted on the post 33 by means of the bolt 3,6. .The'caminay be sxvungl on the;bolt 36. and locked' inv position bythe nut .362?. `lrefeiably adjusting screws '33" are provided..y These entend through ears 33 on the post 33.; l Theeam is formed with a cam groove 37 which. forms atrack fori a 'ball l38,' the ball ybeing rotatively mounted on an arm 39. extending' from a block 40. .Theablock 40`is secured on the'stem 11'vby means of the set screws 41. The block may be adjusted vertically or rotatively by loosening the set screws and moving it to positionfon-the stem. l

As the air builds up above the piston 1 9 it finally reaehesa position Vwhich will overcome thesprings 24, the springs 24 b'eingadjustedhtoyieldat the .desired pressure of the air.. As the stemv 11 is moved axially carrying with it thevalvej'the ball 38 is moved vaxially in. the .cam groove 37.' By shaping thel adj ustingicam groove, the' valve may also given rotative movement 'dependingY on :the slant'or spiral ofthe cam. Thu-s, .for instance,v with a Vcompressorit is desirable to gradually' open the valve as'tbe l air pressure increases. lnithisrinstance the springs24 would be so adjustedthat they would begin to yield immediately theV pressurebegan to buildup. It may be desirable in order )to maintain a uniform speed of the f compressorto increase the valve ,opening from that which may be given to it by this `axial, movement and it the valve isv set partially closed so far asthe slots G and 9 are' concerned it may Ibe partially opened by i tliecamactioii ofthe cam 35, this cam action Y speed in thereeeiver. -.This is very impoiitantV rotating the valve,and by shaping the nc am anypurve or increase/may b e attaiified so as tov giveV to the compressor a comparatively eonstaiityjspeed. up te the desiredf'normal ina-control 'o f this l'tind inlthat. it'gives a A yy 'of adjustment in a simple and' ef` ritieni-mannen In the operation of a @ont completelystopping itmand to avoid the excessive buildingtupiot" pressure in the receiver. By reversing the direction ot the eam, the valve may be gradually rotated so v as v,to effect a closing actlon even though the 'aXia-l movement due to the action 'of the piston would tend kto open it. A cam for accomplishing this is clearly shown in Fig. 6 wherein the upperj partof the ^`021111349, shows a dir'eotionito give az'rotativ'e movement in one direction' and lthe lloiv'er part f of the' cam A43 shovvsa direction'to reversejtleirotation and toclose' the valve..l l Any combination of this kindniay be had-,br theup'per part of the cam may be straight', tlielo'iver'p'art of gthe 'cam' being abrupt so that the closing 'movement follows 'exactly 'the' "axial travel of 'the' valve 'but'th rotative movement takes place at the critical pressure. fTn'Fig: l fa caiirplate `ivith perfetfly'strai'ght sidesI is shown)- For some purposes this shape might bedesiralble."'

In order to `give afstill'rfurth'er controlvof the valve, VI prefer 'to Vprovide `a devicesensitive to pressure which' Will. automatically vary. the cam and *give a rotative action responsive to diliereiites in pressure; A' 'cylinder 44Ais mounted'on 'the'litrainet 14' and is connected with the'air system 23 'by/'means of a pipe '45. The Ypiston46 irs-'arranged in thecylin'der 44 and 'a 'stem'46L extends outwardly from the piston.V The air pressure 'on .the 'piston is opposed by ai'spring 47, `the spring. exerting pressure again'sg a shoulder 47"on'thesten'1 46l and the oppof site endl' of the spring being seated'iin an ac'lj'usting'nut 471 by means'of ivliich the spring 47 may be adjusted. A rack`48fis mounted on the stem 46m-alud engages gear 49. The Oear 49 is mounted onprojection 33g1 extending 'dofivii'iva-rdly fro'iiithe post 33, lthe projection 33e 'extending through the cross piece 34 andbeing journaledtherein. The'ge'avif 49 is 'keyed 'by means ot ai -key 50 Yon t1ie'prOj'eCtQn 33 so that, a turning movement oi the results in a' 'turning' Amovement theproj ection and ivith itfthe` 'post '33 carrying'the cam`35. tit' isfde'rsiredv to con-Y jeetioii at tostn 33 and Ineke the' lever in place.

justing screws 53 and 56 extend through the projections 54 and. 57 on the frame. These screws may be locked in adjustment by the jam nuts 55 andv 58.VK These screws engage thel lever 51 and thus limit. the throw or turning movement of the gear 4 9. In this Way the minimum and maximum ette/ct fot' the pressure device giving rotative action may be limited. j

lVhere it is desired to use the governor as with a vacuum pump the pipe 23 is connected to the opening 23 and the pipe eti with the opening 45a. tions the atmosphere operates at one side of the piston and the pressure is reduced at the opposite side of the piston through the openings 23a and 45?. In this Way the governor can` be made to operato with a vacuum pump. The cam action with its ladjustments and the relative adjustments through the two cylinders make it possible to adjust the action of the device tothe peculiar yconditions encountered in connection with vacuum pumps.

What I claim as nevv is Y 1. In a pump governor, the combination of a governor valve controlling by rotative and axial movement; devices sensitive to changes of pressure; andV mechanism acting with said devices to move said valve rotatively and axially.

2. In a pump governor, the combination of a governor valve controlling by rotative and axial movement; controlling means actuating the valve axially; and devices sensitive to changes of pressure for actuating` said valve rotatively.

3. In a pump governor, the combination of a governor valve controlling by rotative and axial movement; pressure actuated'controlling means actuating the valve axially; and devices sensitive to changes of pressure for actuating said valve rotatively.

4. In a pump Igovernor, the combination of a governor valve controlling by rotative and axial movement; devices sensitive 1o pressure for actuating said valve axially; and means tor actuating the valve rotatively to modify the valve opening incident to the axial movement.

5. In a pump governor, the combination of a governor valve controllingv by rotative and axial movement; pressure actuated devices for actuating said valve axially: and means for actuating the valve rotatively lo modify the valve opening incident to the axial movement.

6. In a governor. the combination oi a governor valve controlling by rotative and axial movement; a controlling means actuating the valve axially; and devices actuating the valve rotatively to modify the valve opening incident to the action of the controlling means.

7. `In a governor, thecombination of a Under these condigovernor-valve controlling by rotative and axial movement; a/:controlling means actuating the valve axially; and a cam actuatingptlie valve rotatively as it is moved axially by said means.

. i 8. In a governor, lthe combination of a governor lvalve controlling by rotative and axial movement; a cmtrolllng means actu `ating the valve axially; and a cam actuating by said means, said cam reversing the direction of 'rota-tion in the range of axial movement ofthe valve.

10. AIn a pump governor, the combination ot a governor valve controlling by rotative and axial movement; a controlling means sensitive to pressure actuating the valve axially; and a cam actuating the valve rotatively as it is moved axially by said means.

l1. In a governor, the combination of a governor valve controlling by rotative and axial movement; a controlling means actuating the valve axially; a cam actuating the valve rotatively as it is moved axially by said means; and means for adjusting the cam to vary the rotative effect.

12. In a pump governor, the combination of a governor valve controlling by rotative and axial movement; a controlling means sensitive to pressure actuating the valve axially; and a cam actuating the valve rotatively as it is moved axially by said means, said cam varying the rotative movement in diilerent points in the axial movement of the valve.

13. In a pump governor, the combination of a governor valve controlling by rotative and axial movement; a controlling means actuating the valve axially; a cam actuating the valve rotatively as it is moved axially by said means; and devices sensitive to pressure for adjusting said cam.

14. In a pump governor, the combination of a governor valve controlling by rotative and axial movement; a controlling means actuating 'the valve axially; a cam actuating the valve rdtatively as it is moved axially b v said means, said cam varying the rotative movement at different points in the axial movement; and devices sensitive to pressure for adjust-ing said cam.

15. In a pump governor, the combination of a governor valvey controlling by rotative and axial movement; a stem on the valve; an arm on the stem; a controlling means acting axially on said stem to move the valve axially; arid a eam mounted conoerircally *with 1the Stem arid adapted to aot on Said arm. Y

16. Ina pump governor, 'the conlo'1`r1a t, 011 of a governor valve controlling by rotative 'and ax'al niovlnerlb'; a'stem on xthe valve; an arm fon the ,st-em; a 'cam actg on lhe arm to 'rotatethe St'emfand with it the valve lwith 'an axial mo'ven'mnt of the stem; and

"meanS for adjuetig thearm on the Stem.

17. "In afu'my 'lov'eror the combination yand :aXal movement; a Controlling 'means actuatmg the valvemaxlally; a gear y loeked to rotatevv'lth 'the stein rack yrluesl'rlng (the gear; fand a pressure devlee .adtuatmg the "ge-ar.

va V'lever rocked with the gear; and stops for 'thellever v 'y 'y 1x9. Irl a vpump governor, ythe eombiria'tvon Yof a goverriorfvalveeoftrolli'ng by Vrotaf'r.ve and "aal kmovement'`;"a eforl'trolln'g "Hifea'ri's actuating the valve axially; .a gear ,loelged to rotate with the stellig araek mehngthe 0 gear; a pressure device actliatlngljhegea'r; a lever having' a to th .tA-henadapted to engage vthe teeth of t e gear; yand Stols aetn'g on the lever. y Y' 20. In a governor, the combnatol of a governor valve Coptrollr by roaxve'A arid axial ovelrent;y a `CO1t`ro liglhean's acjt'uaan-g "the valve Xian-y; @am Swinging@ mon'fed ad aotaizi'g 'th'eyalv'l'tatvely aS if is moved axially by sadlneaiS-g ahd devices for adju'et'rig t'he angle 'of AJche "cam Ovary its rotative effect. y

Ih ltestmoy whereof I have herehto Set my hand. y

d RUDOLPHA CQNRADER. 

